Copper Alloy (UNS C71700)

Jul 16 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Applications

Introduction

Copper UNS C71700 is a wrought alloy belonging to the copper-nickel (Cu-Ni) category. Cu-Ni alloys have a single-phase structure, and the variations in properties occur due to the additions of other elements such as manganese, zinc, and iron. These alloys are known for their strong corrosion resistance in seawater environments.

The following datasheet discusses the chemical composition and properties of copper UNS C71700.

Chemical Composition

The chemical composition of copper UNS C71700 is given in the following table.

Element Content (%)
Copper, Cu 67.8
Nickel, Ni 31
Iron, Fe 0.7
Beryllium, Be 0.5

Physical Properties

The following table discusses the physical properties of copper UNS C71700.

Properties Metric Imperial
Density 8.8-8.94g/cm3 0.317- 0.322 lb/in3

Mechanical Properties

The mechanical properties of copper UNS C71700 are tabulated below.

Properties Metric Imperial
Tensile strength 483-1379 MPa 70-200 ksi
Yield strength 207-1241 MPa 30- 180 ksi
Modulus of elasticity 117 GPa 16969 ksi
Poisson’s ratio 0.34 0.34
Elongation 40% 40%

Applications

Copper UNS C71700 finds application in piping, condensers and heat exchangers in naval vessels and other components used in marine environment.

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